They used fire for much more than just promoting plant growth for baskets, I don't think OP did a very good job of explaining that.

Fire was used to promote plant growth to encourage game, keep meadows open and clear to aide hunting, select for fire tolerant plants which native preferred, and even harvesting of grasshoppers.

I'm sure the natives had some idea that frequent fires helped prevent more catastrophic burns, they would regularly schedule burns from every year to every few years depending on the landscape. But I doubt they could have predicted the kinds of catastrophic fires we've seen after decades and decades of severe fire suppression.